Radeon R9 380 2G vs Radeon RX 590

Intro

Compare all of that to the Radeon RX 590, which features a clock frequency of 1469 MHz and a GDDR5 memory speed of 2000 MHz. It also features a 256-bit bus, and makes use of a 12 nm design. It is made up of 2304 SPUs, 144 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 590		175 Watts
Radeon R9 380 2G		190 Watts
	Difference: 15 Watts (9%)

Memory Bandwidth

Performance-wise, the Radeon RX 590 should in theory be quite a bit better than the Radeon R9 380 2G in general. (explain)

Radeon RX 590		262144 MB/sec
Radeon R9 380 2G		182400 MB/sec
	Difference: 79744 (44%)

Texel Rate

The Radeon RX 590 is a lot (about 95%) more effective at AF than the Radeon R9 380 2G. (explain)

Radeon RX 590		211536 Mtexels/sec
Radeon R9 380 2G		108640 Mtexels/sec
	Difference: 102896 (95%)

Pixel Rate

The Radeon RX 590 will be quite a bit (about 51%) faster with regards to full screen anti-aliasing than the Radeon R9 380 2G, and also capable of handling higher resolutions while still performing well. (explain)

Radeon RX 590		47008 Mpixels/sec
Radeon R9 380 2G		31040 Mpixels/sec
	Difference: 15968 (51%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the largest amount of data (counted in megabytes per second) that can be moved across the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.